<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avator_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!-- 登录区域 -->
      <div class="form_container">
        <el-form :model="ruleForm" :rules="rules" ref="ruleForm">
          <el-form-item prop="username">
            <el-input v-model="ruleForm.username" placeholder="用户名" prefix-icon="el-icon-user">
            </el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input v-model="ruleForm.password" prefix-icon="el-icon-lock" placeholder="请输入密码" show-password>
            </el-input>
          </el-form-item>
          <el-form-item class="btns">
            <el-button type="primary" @click="submitForm('ruleForm')" :loading="loginBtnLoadin">登录</el-button>
            <el-button type="infor" @click="resetForm('ruleForm')">重置</el-button>
          </el-form-item>
        </el-form>
      </div>
    </div>

  </div>


</template>

<script>
  export default {
    data() {
      return {
        loginBtnLoadin: false,
        ruleForm: {
          username: 'admin',
          password: '123456',
        },
        rules: {
          username: [{
              required: true,
              message: '请输入用戶名',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 15,
              message: '长度在 3 到 15 个字符',
              trigger: 'blur'
            }
          ],
          password: [{
              required: true,
              message: '请输入用密码',
              trigger: 'blur'
            },
            {
              min: 6,
              max: 15,
              message: '长度在 6 到 15 个字符',
              trigger: 'blur'
            }
          ],
        }
      }
    },
    methods: {
      submitForm(formName) {
        // console.log(this);
        this.$data.loginBtnLoadin = true;

        this.$refs[formName].validate(async (valid) => {
          if (!valid) return;
          const {
            data: res
          } = await this.$http.post('login', this.ruleForm);
          console.log(res.meta.status);
          if (res.meta.status == 400) {
            this.$message.error(res.meta.msg);
          }
          if (res.meta.status !== 200) return console.log('登录失败');

          // this.$message.success('登录成功')
          // 将登陆成功之后的 token，保存到客户端的 sessionStorage 中
          // 项目中除了登录之外的其他API接口，必须在登录之后才能访问
          // token 只应在当前网站的打开期间生效
          window.sessionStorage.setItem('token', res.data.token);
          // 跳转到后台主页，路由地址是 /home
          this.$router.push('/home');

        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      }
    }

  }
</script>

<style lang="less" scoped>
  .login_container {
    background-color: deepskyblue;
    height: 100%;
  }

  .login_box {
    height: 300px;
    width: 450px;
    background-color: #fff;
    border-radius: 5px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    .avator_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        height: 100%;
        width: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }

  }

  .form_container {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%);
    width: 80%;
    padding: 20px;
    box-sizing: border-box;
  }

  .btns {
    display: flex;
    justify-content: center;
  }
</style>
